this post was submitted on 10 May 2025
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Solar power station DIY projects? (palaver.p3x.de)
submitted 3 days ago* (last edited 3 days ago) by hendrik@palaver.p3x.de to c/askelectronics@discuss.tchncs.de
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I just found out I can buy a decent 400W solar panel in the local hardware store for around 90€ these days.

Are there people around with experience in off-grid solar? There is quite some supply in cheap MPTT charge controllers on the internet. And I can't afford a 700€ power station. But I would be able to buy a few power tool batteries or one of the lead-acid batteries people put in their caravan. Are there projects building a power station myself? Is this even worth it?

Maybe someone alredy wrote a blog post with recommendations or findings and failures along the way. Or has something similar running at home?

(Thanks to the mods for steering me towards the correct community.)

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[–] abeorch@friendica.ginestes.es 2 points 1 day ago

@hendrik Aliexpress will have every kind of DC wiring accessory you need for the consumption side, DC-DC converters ( up for battery and laptop charging , and down for USB ) plug and socket adapters.

12v fridges and TVs are a thing now. Most micro form factor PCs have 12 or 19v DC inputs. You can evennrun starlink from DC. 12 Dc Water pumps are cheap even selling small 12/24v Aircon and washing machines. Only thing that really doesnt work is cooking (gas bottle is best)